A paper corner protector bending resistance experiment device
By using a hydraulic lifting cylinder to drive a movable mounting frame and a magnetically engaged double-sided break-off end, the problem that existing paper corner protector bending resistance testing devices cannot be adapted to the front and back sides of paper corner protectors is solved, enabling accurate measurement and efficient testing of the bending strength of paper corner protectors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HONGYINGSHUN PAPER PROD CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-28
AI Technical Summary
Existing paper corner protector bending resistance testing devices cannot flexibly adjust the shape, angle and spacing of the contact surface, and cannot adapt to the structural differences between the front and back of the paper corner protector, resulting in insufficient measurement convenience and adaptability, and affecting the accuracy of bending detection.
A paper corner protector bending resistance test device was designed. It uses a hydraulic lifting cylinder to drive a movable mounting frame, combined with a magnetically attached double-sided broken end and a right-angle support, to achieve flexible support and accurate measurement of the front and back sides of the paper corner protector. The bending strength data is monitored by a pressure strength detector.
It enables accurate measurement of the bending strength of paper corner protectors, improves the reliability and adaptability of measurement data, and can truly reflect its reverse bending strength, meeting the comprehensive testing requirements for double-sided bending strength.
Smart Images
Figure CN224568757U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper corner protector bending resistance testing technology, and in particular to a paper corner protector bending resistance testing device. Background Technology
[0002] Paper corner protectors, also known as edge boards, are one of the most popular packaging products internationally, used to replace wooden packaging and other bulky packaging materials. They are characterized by low price, light weight, sturdiness, and compliance with environmental protection requirements. The core of the paper corner protector bending resistance testing device is to accurately test the bending strength of paper corner protectors by simulating the stress scenarios they experience in actual use. During the test, the two ends of the paper corner protector are fixed to the support points of a support mechanism. A pressure applying mechanism applies pressure perpendicular to the length of the paper corner protector to its middle until the paper corner protector bends or breaks. The testing mechanism simultaneously records data such as pressure values and displacement during the pressure application process. Finally, based on the data, the bending strength index of the paper corner protector is calculated, providing a basis for the quality assessment and application selection of paper corner protectors. In existing paper corner protector bending resistance testing devices, the support and pressure mechanisms are mostly fixed structures. The shape, angle, and spacing of the contact surfaces with the paper corner protector cannot be flexibly adjusted according to the structural differences between the front and back sides of the paper corner protector. Since the paper corner protector is usually right-angled and hollow, it is necessary to measure it in both front and back placement states. Because the cross-sectional shape of the paper corner protector in the back is different from that in the front, it cannot be well adapted to the two different support and measurement methods. The convenience and adaptability of measurement are relatively insufficient, and it cannot truly reflect its reverse bending strength. Furthermore, since the bending strength is usually measured by lifting and lowering when bending vertically, the vertical calibration and anti-deviation ability during bending is relatively insufficient, which seriously affects the bending detection accuracy and makes it difficult to meet the actual needs of comprehensive testing of the bending strength of paper corner protectors on both sides. Therefore, we propose a paper corner protector bending resistance testing device to solve the above problems. Utility Model Content
[0003] In response to the problems raised, this utility model provides a paper corner protector bending resistance test device to solve the above-mentioned problems.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A paper corner protector bending resistance test device includes a production platform and a support bracket installed on the top of the production platform, wherein a hydraulic lifting cylinder is provided on the top of the support bracket; The bottom output end of the hydraulic lifting cylinder is equipped with a pressure intensity detector and a movable mounting bracket. The back of the movable mounting bracket is equipped with a vertical calibration bracket that slides and engages with the bearing bracket. The bottom of the movable mounting bracket is magnetically fixed with a double-sided broken end. The top of the production platform is covered with a paper corner protector support plate located directly below the double-sided broken end. Right-angle support seats are provided on both sides of the top of the paper corner protector support plate.
[0005] Preferably, the support bracket is in the shape of an inverted L and is bolted to the top of the production platform. The front of the inner side of the support bracket is provided with a locking and fixing slide. The side of the vertical calibration frame extends and slides into the inner side of the locking and fixing slide. The vertical calibration frame is bolted to the back of the movable mounting frame.
[0006] Preferably, the hydraulic lifting cylinder is embedded and fixed on the support bracket, the bottom of the hydraulic lifting cylinder passes through the support bracket and is bolted and fixed to the pressure intensity detector, and the pressure intensity detector is located between the movable mounting bracket and the hydraulic lifting cylinder.
[0007] Preferably, the production platform is equipped with a control display switch, which is electrically connected to the hydraulic lifting cylinder and the pressure intensity detector.
[0008] Preferably, the movable mounting bracket is arranged in an inverted U-shape, and the bottom two sides of the movable mounting bracket are provided with locking mounting grooves. Both sides of the double-sided broken end are provided with strong magnetic adsorption ends. The two strong magnetic adsorption ends are magnetically locked into the two locking mounting grooves. The locking mounting grooves and the strong magnetic adsorption ends are all rectangular and matched.
[0009] Preferably, the upper and lower sides of the double-sided broken end are respectively provided with a right-angle extrusion end and a flat extrusion end, the right-angle extrusion end and the flat extrusion end are symmetrically distributed, and both the right-angle extrusion end and the flat extrusion end are located directly above the paper corner support plate.
[0010] Preferably, two insertion positioning posts are provided on both sides of the top of the production platform, and two insertion mounting holes are provided on both sides of the paper corner protector support plate. The four insertion positioning posts are correspondingly inserted and fixed in the four insertion mounting holes. A bending detection groove is provided in the middle of the upper and lower sides of the paper corner protector support plate, and the bending detection groove is located directly below the double-sided broken end.
[0011] Preferably, both right-angle support seats are integral with the paper corner protector support plate, and the plane of the right-angle support seat away from the paper corner protector support plate is provided with a right-angle support groove.
[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. This paper corner protector bending test device uses a hydraulic lifting cylinder to drive a movable mounting frame to rise and fall vertically. A vertical calibration frame provides vertical calibration and limits the movement. The movable mounting frame can stably lift and lower the double-sided broken ends, facilitating the bending test by pressing the paper corner protector with the double-sided broken ends. During the pressing process, a pressure strength detector provides direct monitoring of the bending strength data, resulting in accurate and reliable measurement data. This device has a good vertical calibration and anti-deviation effect, and the measurement data is accurate and reliable.
[0013] 2. This paper corner protector bending resistance testing device features a double-sided break-off end that magnetically attaches to the bottom of a movable mounting frame, facilitating disassembly, assembly, and flipping. Two right-angle support seats are located on either side of the top of the paper corner protector support plate, providing right-angle support for the paper corner protector. During bending measurement, the double-sided break-off end allows for forward and reverse compression, and the paper corner protector support plate can be flipped to provide forward and reverse support. Multiple sets of paper corner protectors in different states can be placed and bent, facilitating accurate measurement of the bending strength of the paper corner protector. The device has a wide measurement data range and allows for adjustment of support based on the material's orientation, resulting in high measurement convenience and adaptability, and accurately reflecting its reverse bending strength. Attached Figure Description
[0014] Figure 1 This utility model provides a frontal three-dimensional schematic diagram of a paper corner protector bending resistance test device; Figure 2 This utility model provides a top-view three-dimensional schematic diagram of a paper corner protector bending resistance test device; Figure 3 This is a top-view perspective view of the vertical calibration frame and the double-sided broken-end connection structure of this utility model; Figure 4 This is a bottom-view perspective view of the vertical calibration frame and the double-sided broken-end connection structure of this utility model; Figure 5 This is a top-view perspective view of the connection structure between the pressure intensity detector and the movable mounting bracket of this utility model.
[0015] In the diagram: 1. Production platform; 2. Support bracket; 201. Snap-fit fixing slide; 3. Hydraulic lifting cylinder; 4. Pressure strength detector; 5. Movable mounting bracket; 501. Snap-fit mounting groove; 6. Vertical calibration bracket; 7. Double-sided break end; 701. Strong magnetic adsorption end; 702. Right-angle extrusion end; 703. Flat extrusion end; 8. Paper corner protector support plate; 801. Insertion positioning post; 802. Insertion mounting hole; 803. Bending detection groove; 9. Right-angle support seat; 901. Right-angle support groove; 10. Control display switch. Detailed Implementation
[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0018] Please see Figures 1-5A paper corner protector bending resistance test device includes a production platform 1 and a support bracket 2 installed on the top of the production platform 1. The top of the support bracket 2 is provided with a hydraulic lifting cylinder 3. The bottom output end of the hydraulic lifting cylinder 3 is equipped with a pressure intensity detector 4 and a movable mounting bracket 5. The back of the movable mounting bracket 5 is equipped with a vertical calibration bracket 6 that slides and engages with the bearing bracket 2. The bottom of the movable mounting bracket 5 is magnetically fixed with a double-sided broken end 7. The top of the production platform 1 is covered with a paper corner support plate 8 located directly below the double-sided broken end 7. Right-angle support seats 9 are provided on both sides of the top of the paper corner support plate 8. The beneficial effects of this solution are as follows: By bolting a support bracket 2 to the top of the production platform 1, the hydraulic lifting cylinder 3 and the vertical calibration frame 6 can be supported and carried. The operation of the hydraulic lifting cylinder 3 can drive the movable mounting frame 5 to rise and fall vertically. The vertical calibration frame 6 performs vertical calibration and limit. The movable mounting frame 5 can stably drive the double-sided broken end 7 to rise and fall, which makes it easy for the double-sided broken end 7 to squeeze the paper corner protector to complete the bending test. During the squeezing, the pressure strength detector 4 can visually monitor the bending strength data, and the measurement data is relatively accurate and reliable. The double-sided broken end 7 can be magnetically attached to the bottom of the movable mounting bracket 5 for easy disassembly and flipping. The top two sides of the paper corner protector support plate 8 are provided with two right-angle support seats 9, which can support the paper corner protector at right angles. During bending measurement, the double-sided broken end 7 can be squeezed in both directions. The paper corner protector support plate 8 can be flipped to support the paper corner protector in both directions. Multiple sets of paper corner protector placement and bending in different states facilitate accurate measurement of the bending strength of the paper corner protector. The measurement data range is large, and the vertical calibration of the device has a good anti-deviation effect. The measurement data is relatively accurate and reliable. Moreover, the support can be adjusted according to the front and back of the material, which makes the measurement convenient and adaptable. It can truly reflect its reverse bending strength.
[0019] Furthermore, the support bracket 2 is bolted to the top of the production platform 1 in an inverted L shape. The front of the inner side of the support bracket 2 is provided with a locking and fixing slide 201. The side of the vertical calibration frame 6 extends and slides into the inner side of the locking and fixing slide 201. The vertical calibration frame 6 is bolted to the back of the movable mounting frame 5. Specifically, the support bracket 2 is bolted to the top of the production platform 1 in an inverted L shape, providing stable support and convenient installation. The front of the inner side of the support bracket 2 is provided with a locking and fixing slide 201, which facilitates the locking and sliding support of the vertical calibration frame 6. When the movable mounting frame 5 is raised and lowered vertically, it can simultaneously drive the vertical calibration frame 6 to lock and slide within the locking and fixing slide 201. The vertical calibration frame 6 has a good precise anti-offset positioning effect and high bending measurement accuracy.
[0020] Furthermore, the hydraulic lifting cylinder 3 is embedded and fixed on the bearing bracket 2, and the bottom of the hydraulic lifting cylinder 3 passes through the bearing bracket 2 and is bolted and fixed to the pressure intensity detector 4. The pressure intensity detector 4 is located between the movable mounting bracket 5 and the hydraulic lifting cylinder 3. Specifically, the hydraulic lifting cylinder 3 is embedded and fixed on the bearing bracket 2, which can stably push the pressure strength detector 4 and the movable mounting frame 5 to rise and fall for bending measurement. The pressure strength detector 4 is located between the movable mounting frame 5 and the hydraulic lifting cylinder 3. When the movable mounting frame 5 is under force, the pressure strength detector 4 can accurately measure its force strength, which is convenient for accurately measuring the bending resistance data of the paper corner protector.
[0021] Furthermore, the production platform 1 is equipped with a control display switch 10, which is electrically connected to the hydraulic lifting cylinder 3 and the pressure intensity detector 4. Specifically, the production platform 1 is equipped with a control display switch 10. The measurement data of the pressure strength detector 4 can be displayed and controlled intuitively by the control display switch 10. The vertical strength setting can be made by the control display switch 10. When the pressure of the pressure strength detector 4 reaches the specified value, the hydraulic lifting cylinder 3 can be directly controlled by the control display switch 10 to stop running. The control effect is good, the detection is accurate, and the bending test operation is convenient.
[0022] Furthermore, the movable mounting bracket 5 is arranged in an inverted U-shape. The bottom two sides of the movable mounting bracket 5 are provided with snap-fit mounting grooves 501. Both sides of the double-sided broken end 7 are provided with strong magnetic adsorption ends 701. The two strong magnetic adsorption ends 701 are magnetically snapped into the two snap-fit mounting grooves 501. The snap-fit mounting grooves 501 and the strong magnetic adsorption ends 701 are both rectangular and matched. Specifically, the movable mounting bracket 5 is arranged in an inverted U-shape to facilitate magnetic support of the double-sided broken ends 7. The bottom of the movable mounting bracket 5 has locking mounting grooves 501 on both sides, and the double-sided broken ends 7 have strong magnetic adsorption ends 701 on both sides, which can be correspondingly locked and magnetically attracted into the locking mounting grooves 501. This facilitates the magnetic locking and fixing of the double-sided broken ends 7 to the bottom of the movable mounting bracket 5. The magnetic installation is highly secure, and the double-sided broken ends 7 can be removed and installed simply by pulling them out. The locking mounting grooves 501 and the strong magnetic adsorption ends 701 are both rectangular and matched, which facilitates the flipping installation of the double-sided broken ends 7. The operation is relatively simple and convenient, and the magnetic locking is stable and easy to install.
[0023] Furthermore, the upper and lower sides of the double-sided broken end 7 are respectively provided with a right-angle extrusion end 702 and a flat extrusion end 703. The right-angle extrusion end 702 and the flat extrusion end 703 are symmetrically distributed, and both the right-angle extrusion end 702 and the flat extrusion end 703 are located directly above the paper corner support plate 8. Specifically, the double-sided break end 7 is provided with a right-angle extrusion end 702 and a flat extrusion end 703 on its upper and lower sides, respectively. The right-angle extrusion end 702 can extrude and position the pointed part of the paper corner protector, which is convenient for bending strength testing. The flat extrusion end 703 is convenient for bending strength testing of both the pointed part and both ends of the paper corner protector. The testing adaptability is good. The right-angle extrusion end 702 and the flat extrusion end 703 can be adjusted simply by flipping the double-sided break end 7. The adjustment adaptability is good and the operation is convenient.
[0024] Furthermore, two insertion positioning posts 801 are provided on both sides of the top of the production platform 1, and two insertion mounting holes 802 are provided on both sides of the paper corner support plate 8. The four insertion positioning posts 801 are correspondingly inserted and fixed in the four insertion mounting holes 802. A bending detection groove 803 is provided in the middle of the upper and lower sides of the paper corner support plate 8. The bending detection groove 803 is located directly below the double-sided broken end 7. Specifically, the production platform 1 has two insertion positioning posts 801 on both sides of its top, and the paper corner protector support plate 8 has two insertion mounting holes 802 on both sides. When the paper corner protector support plate 8 is installed, it can be positioned on the insertion positioning posts 801 through the insertion mounting holes 802, which facilitates the positioning and fixing of the paper corner protector support plate 8. The paper corner protector support plate 8 is easy to flip and place, has stable positioning, and is easy to disassemble and assemble. The middle of the upper and lower sides of the paper corner protector support plate 8 has a bending detection groove 803, and the bending detection groove 803 is located directly below the double-sided broken end 7. When the double-sided broken end 7 is subjected to extrusion bending detection, the space can be adjusted by the bending detection groove 803, making bending convenient and stable.
[0025] Furthermore, both right-angle support seats 9 are integral with the paper corner protector support plate 8, and a right-angle support groove 901 is provided on the plane of the right-angle support seat 9 away from the paper corner protector support plate 8; Specifically, the right-angle support 9 and the paper corner protector support plate 8 are integrated as a whole, ensuring stable installation and compatibility. The right-angle support groove 901 on the right-angle support 9 facilitates the support of the sharp corner of the paper corner protector, ensuring stable placement. Furthermore, the side of the right-angle support 9 away from the paper corner protector support plate 8 is horizontal. When the paper corner protector support plate 8 is flipped over with the flat side facing up, the right-angle support groove 901 can be placed stably, providing stable support for the paper corner protector support plate 8. This results in good installation and support effect and excellent compatibility.
[0026] How to use and how to work this device: By bolting a support bracket 2 to the top of the production platform 1, the hydraulic lifting cylinder 3 and the vertical calibration frame 6 can be supported and carried. The operation of the hydraulic lifting cylinder 3 can drive the movable mounting frame 5 to rise and fall vertically, and can simultaneously drive the vertical calibration frame 6 to engage and slide on the side of the support bracket 2. During the lifting and bending test, the movable mounting frame 5 can be vertically calibrated and limited by the vertical calibration frame 6. When the paper corner protector material is placed on the paper corner protector support plate 8, the movable mounting frame 5 can stably drive the double-sided broken end 7 to rise and fall, which makes it easy for the double-sided broken end 7 to squeeze the paper corner protector on the paper corner protector support plate 8. The pressure is monitored by the pressure strength detector 4 on the top of the movable mounting frame 5, which makes it easy to monitor the bending strength data directly. The test is convenient, and the vertical calibration frame 6 has a good vertical calibration anti-deviation effect, and the measurement data is relatively accurate and reliable. The double-sided broken end 7 can be magnetically attached to the bottom of the movable mounting bracket 5, making disassembly and assembly convenient. The upper and lower sides of the double-sided broken end 7 are triangular and flat, respectively, and the paper corner protector support plate 8 is positioned on the top of the production platform 1, facilitating frontal support or reverse flipping. Two right-angle support seats 9 are correspondingly provided on the top two sides of the paper corner protector support plate 8. The two right-angle support seats 9 can support the bottom sharp corners of the paper corner protector. Bending and measurement are then performed from the flat end or triangular end of the double-sided broken end 7 respectively. To obtain accurate data, flip the paper corner protector support plate 8 so that its flat side faces up and the right-angle support seat 9 faces down. The bottom two sides of the paper corner protector can be supported on the top of the paper corner protector support plate 8. Then, bend and measure from the flat end or triangular end of the double-sided broken end 7 respectively, and measure the data again. Place and bend the paper corner protector in multiple different states to facilitate accurate measurement of the bending strength of the paper corner protector. The measurement data range is large, the measurement accuracy is high, the measurement convenience and adaptability are high, and it can truly reflect its reverse bending strength. The support bracket 2 is bolted to the top of the production platform 1 in an inverted L shape, providing stable support and convenient installation. The front of the inner side of the support bracket 2 is provided with a locking and fixing slide 201, which facilitates the locking and sliding support of the vertical calibration frame 6. When the movable mounting frame 5 is raised and lowered vertically, it can simultaneously drive the vertical calibration frame 6 to lock and slide within the locking and fixing slide 201. The vertical calibration frame 6 has a good precise anti-offset positioning effect and high bending measurement accuracy. The hydraulic lifting cylinder 3 is embedded and fixed on the bearing bracket 2, which can stably push the pressure strength detector 4 and the movable mounting frame 5 to lift and lower for bending measurement. The pressure strength detector 4 is located between the movable mounting frame 5 and the hydraulic lifting cylinder 3. When the movable mounting frame 5 is under force, the pressure strength detector 4 can accurately measure its force strength, which is convenient for accurately measuring the bending resistance data of the paper corner protector. The production platform 1 is equipped with a control display switch 10. The measurement data of the pressure strength detector 4 can be displayed and controlled intuitively by the control display switch 10. The vertical strength setting can be made by the control display switch 10. When the pressure of the pressure strength detector 4 reaches the specified value, the hydraulic lifting cylinder 3 can be stopped directly by the control display switch 10. The control effect is good, the detection is accurate, and the bending test operation is convenient. The movable mounting bracket 5 is designed in an inverted U-shape to facilitate magnetic support of the double-sided broken ends 7. The bottom of the movable mounting bracket 5 has locking mounting grooves 501 on both sides, and the double-sided broken ends 7 have strong magnetic adsorption ends 701 on both sides, which can be magnetically locked into the locking mounting grooves 501. This makes it easy for the double-sided broken ends 7 to be magnetically locked and fixed to the bottom of the movable mounting bracket 5. The magnetic installation is highly secure, and the double-sided broken ends 7 can be removed and installed simply by pulling them out. The locking mounting grooves 501 and the strong magnetic adsorption ends 701 are both rectangular and matched, which makes it easy to flip the double-sided broken ends 7 for installation. The operation is relatively simple and convenient, and the magnetic locking is stable and easy to install. The double-sided break end 7 is provided with a right-angle extrusion end 702 and a flat extrusion end 703 on the upper and lower sides respectively. The right-angle extrusion end 702 can extrude and position the pointed part of the paper corner protector, which is convenient for bending strength testing. The flat extrusion end 703 is convenient for bending strength testing of both the pointed part and both ends of the paper corner protector. The testing adaptability is good. The right-angle extrusion end 702 and the flat extrusion end 703 can be adjusted simply by flipping the double-sided break end 7. The adjustment adaptability is good and the operation is convenient. Two insertion positioning posts 801 are provided on both sides of the top of the production platform 1. Two insertion mounting holes 802 are provided on both sides of the paper corner support plate 8. When the paper corner support plate 8 is installed, it can be positioned on the insertion positioning posts 801 through the insertion mounting holes 802, which facilitates the positioning and fixing of the paper corner support plate 8. The paper corner support plate 8 is easy to flip and place, with stable positioning and convenient disassembly and assembly. A bending detection groove 803 is provided in the middle of the upper and lower sides of the paper corner support plate 8. The bending detection groove 803 is located directly below the double-sided broken end 7, which facilitates the space adjustment of the double-sided broken end 7 when it is subjected to extrusion bending detection, making bending convenient and stable. The right-angle support 9 and the paper corner protector support plate 8 are integrated into one unit, ensuring stable and compatible installation. The right-angle support groove 901 on the right-angle support 9 is designed to support the sharp corner of the paper corner protector, ensuring stable placement. Furthermore, the side of the right-angle support 9 away from the paper corner protector support plate 8 is horizontal. When the paper corner protector support plate 8 is flipped over with the flat side facing up, the right-angle support groove 901 can be placed stably, providing stable support for the paper corner protector support plate 8. This results in good installation and support performance and excellent compatibility. The device has a good vertical calibration and anti-deviation effect, and the measurement data is relatively accurate and reliable. It can be adjusted and supported according to the front and back of the material, which makes the measurement convenient and adaptable, and can truly reflect its reverse bending strength.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A paper corner bead bending resistance test device, comprising a production platform (1) and a bearing support (2) mounted on the top of the production platform (1), characterized in that: The top of the support bracket (2) is equipped with a hydraulic lifting cylinder (3); The bottom output end of the hydraulic lifting cylinder (3) is provided with a pressure intensity detector (4) and a movable mounting bracket (5). The back of the movable mounting bracket (5) is provided with a vertical calibration bracket (6) that slides and engages with the bearing bracket (2). The bottom of the movable mounting bracket (5) is magnetically fixed with a double-sided broken end (7). The top of the production platform (1) is covered with a paper corner support plate (8) located directly below the double-sided broken end (7). The top two sides of the paper corner support plate (8) are provided with right-angle support seats (9).
2. The paper corner bead bending resistance testing device according to claim 1, characterized in that: The support bracket (2) is bolted to the top of the production platform (1) in an inverted L shape. The front of the inner side of the support bracket (2) is provided with a locking and fixing slide (201). The side of the vertical calibration frame (6) extends and slides into the inner side of the locking and fixing slide (201). The vertical calibration frame (6) is bolted to the back of the movable mounting frame (5).
3. The paper corner bead bending resistance testing device of claim 1, wherein: The hydraulic lifting cylinder (3) is embedded and fixed on the support bracket (2). The bottom of the hydraulic lifting cylinder (3) passes through the support bracket (2) and is bolted to the pressure intensity detector (4). The pressure intensity detector (4) is located between the movable mounting bracket (5) and the hydraulic lifting cylinder (3).
4. The paper corner bead bending resistance testing device of claim 1, wherein: The production platform (1) is equipped with a control display switch (10), which is electrically connected to the hydraulic lifting cylinder (3) and the pressure intensity detector (4).
5. The paper corner protector bending resistance test device according to claim 1, characterized in that: The movable mounting bracket (5) is arranged in an inverted U-shape. The bottom sides of the movable mounting bracket (5) are provided with locking mounting grooves (501). Both sides of the double-sided broken end (7) are provided with strong magnetic adsorption ends (701). The two strong magnetic adsorption ends (701) are magnetically locked into the two locking mounting grooves (501). The locking mounting grooves (501) and the strong magnetic adsorption ends (701) are both rectangular and matched.
6. The paper corner protector bending resistance test device according to claim 1, characterized in that: The double-sided broken end (7) is provided with a right-angle extrusion end (702) and a flat extrusion end (703) on its upper and lower sides respectively. The right-angle extrusion end (702) and the flat extrusion end (703) are symmetrically distributed. The right-angle extrusion end (702) and the flat extrusion end (703) are both located directly above the paper corner support plate (8).
7. The paper corner protector bending resistance test device according to claim 1, characterized in that: The production platform (1) has two plug-in positioning posts (801) on both sides of the top. The paper corner support plate (8) has two plug-in mounting holes (802) on both sides. The four plug-in positioning posts (801) are plugged into and fixed in the four plug-in mounting holes (802). The paper corner support plate (8) has a bending detection groove (803) in the middle of the upper and lower sides. The bending detection groove (803) is located directly below the double-sided broken end (7).
8. The paper corner protector bending resistance test device according to claim 1, characterized in that: Both right-angle support seats (9) are integral with the paper corner support plate (8), and the right-angle support seat (9) has a right-angle support groove (901) on the side away from the paper corner support plate (8).